61 lines
1.6 KiB
Java
61 lines
1.6 KiB
Java
/**
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* This software was developed and / or modified by Raytheon Company,
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* pursuant to Contract DG133W-05-CQ-1067 with the US Government.
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*
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* U.S. EXPORT CONTROLLED TECHNICAL DATA
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* This software product contains export-restricted data whose
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* export/transfer/disclosure is restricted by U.S. law. Dissemination
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* to non-U.S. persons whether in the United States or abroad requires
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* an export license or other authorization.
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*
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* Contractor Name: Raytheon Company
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* Contractor Address: 6825 Pine Street, Suite 340
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* Mail Stop B8
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* Omaha, NE 68106
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* 402.291.0100
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*
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* See the AWIPS II Master Rights File ("Master Rights File.pdf") for
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* further licensing information.
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**/
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package com.raytheon.uf.viz.alertviz;
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import java.net.ServerSocket;
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/**
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* Checks if the AlertViz receiver is already running on this machine on the
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* specified port.
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*
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* <pre>
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*
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* SOFTWARE HISTORY
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*
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* Date Ticket# Engineer Description
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* ------------ ---------- ----------- --------------------------
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* Jun 2, 2015 4473 njensen Initial creation
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*
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* </pre>
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*
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* @author njensen
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* @version 1.0
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*/
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public class ReceiverConnChecker {
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private ReceiverConnChecker() {
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// don't allow instantiation
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}
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public static boolean isReceiverRunning(int port) {
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try {
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ServerSocket socket = new ServerSocket(port);
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socket.close();
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// port is not in use
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return false;
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} catch (Exception e) {
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// port is already used
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return true;
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}
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}
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}
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